Other mistake: When Bilbo is looking at Thror's Map, he says "This hand points from these runes," but there are no runes visible where the hand is. Later, Elrond reads the Moon Letters that appear there, and says that they say, "Stand by the grey stone when the Thrush knocks, and the last light of the setting sun will shine upon the keyhole." But the Moon Letters actually translate to "Five feet high the door and three may walk abreast."
The Hobbit (1977)
1 mistake
Directed by: Arthur Rankin Jr., Jules Bass
Starring: John Huston, Richard Boone, Hans Conried, Orson Bean
Bilbo Baggins: No hat, no stick, no pipe, not even a pocket handkerchief. How can one survive?